Knights Cyclopdia of the Industry of All Nations 1851
Knights Cyclopdia of the Industry of All Nations 1851
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In our eReader you can find the full English version of the book. Read Knights Cyclopdia of the Industry of All Nations 1851 Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Knights Cyclopdia of the Industry of All Nations 1851
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Sir David Brew- ster found means to obtain multiplied images of such objects as flowers, trees, and even per- sons or things in motion : and thus the im- portance of the instrument was greatly increased. Some kaleidoscopes have been executed in such a manner that the two mhrors may be placed at any required angle with one another ; by which means the images in the visible field of view may be varied at pleasure. The instrument is capable also of being constructed so that the multiplied image ma...y be projected on a screen, and thus made visible at one time to many spectators. Again, Dr. Roget has shown that the properties of the instrument may be greatly extended by employing, instead of two, three and even four plain mirrors, united together at their edges so as to form a hollow prism, or a frustum of a pyramid, the reflecting surfaces being to- wards the interior. These are called poly- central kaleidoscopes.
KAMTCHATKA. In this remote corner of Asia there are a few spots which yield rye, barley, buckwheat, potatoes, white cabbages, turnips, radishes, and cucumbers, but these articles are only cultivated by the Russian settlers.
What to read after Knights Cyclopdia of the Industry of All Nations 1851?
You can find similar books in the "Read Also" column, or choose other free books by George Dodd to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Sir David Brew- ster found means to obtain multiplied images of such objects as flowers, trees, and even per- sons or things in motion : and thus the im- portance of the instrument was greatly increased. Some kaleidoscopes have been executed in such a manner that the two mhrors may be placed at any required angle with one another ; by which means the images in the visible field of view may be varied at pleasure. The instrument is capable also of being constructed so that the multiplied image ma...y be projected on a screen, and thus made visible at one time to many spectators. Again, Dr. Roget has shown that the properties of the instrument may be greatly extended by employing, instead of two, three and even four plain mirrors, united together at their edges so as to form a hollow prism, or a frustum of a pyramid, the reflecting surfaces being to- wards the interior. These are called poly- central kaleidoscopes.
KAMTCHATKA. In this remote corner of Asia there are a few spots which yield rye, barley, buckwheat, potatoes, white cabbages, turnips, radishes, and cucumbers, but these articles are only cultivated by the Russian settlers.
What to read after Knights Cyclopdia of the Industry of All Nations 1851?
You can find similar books in the "Read Also" column, or choose other free books by George Dodd to read onlineMoreLess
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